PAluminum Frame Challenger Power Washers - The Challenger Cold Water Series combines portability, durability and power to handle the most demanding jobs. The aluminum frame is lightweight and corrosion resistant. This power washer also features solid flat free tires allowing for easy portability.Cold water aluminum pressure washer models provide you a FREE: industrial hose with a swivel end and bend restrictor, professional-grade insulated trigger gun with safety lock, insulated wand for user safety, and quick connect nozzle. Along with all that Alkota provides a winterizing valve to help you protect your investment against freezing. With the support of your local Alkota dealer we can find the correct solution for you.